CAIE A Level Biology 9700 · Transport in plants
A student prepared stained transverse sections of a young root and a young stem from a herbaceous dicotyledonous plant. Describe the differences in the distribution of xylem and phloem in these two sections, and explain how each arrangement is related to the function of the organ.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.